Feature: 1. Protecting Bearings: The main function of this trailer axle dust cover is to protect the bearings from dust, particles and other contaminants. This helps to extend the life of the bearings and maintain their performance. 2. Easy Maintenance: This trailer axle dust cover blocks external materials from entering the bearing and reduces the frequency of routine cleaning and lubrication. 3. Durable And Reliable: This trailer carrier axle dust cover can withstand the effects of harsh environmental elements such as dust, water and chemicals. 4. Compact And Portable: This trailer axle dust cover is small in size and light in weight, making it very convenient to carry and store on the go. 5. Wide Application: This trailer axle dust cover has a very wide range of applications and can be used for home, RV travel, picnics and camping. Specification: Item Type: Trailer Bearing Dust Cover Material: Metal, Rubber Specification: Approx. 62mm x 36mm/2.44 x 1.42in ( Diameter x Height ) Use: Applicable for 7000 to 8000lb Trailer Wheel Hubs. Package List: 4 x Trailer Bearing Dust Cover